For the first time since the third episode, I actually remembered that this was on... but I forgot that I'd just ended Daylight savings time and didn't take the time difference into consideration, so I missed it anyway.

Are Ana Paula & Renata that good/the other teams that bad, or are they greatly benefiting from the sign-in sheet? Or is it both?

I would say Ana Paula and Renata are really good plus the teams that have the potential to get first place make some idiot mistakes. Renan & Fran did not make any mistake and for that reason they got second. For me Edu and Rick are the second strongest team, they really have the hability to recover quickly from some mistakes.... but this time it was not enough. Ferd and Ferds were really lucky for not getting more time penalty the previous leg.